500 Best Building Materials MCQ
Q305). The plastics prepared from Vinyl resin are
a).odourless
b).non-toxic
c).transparent
d).All of these.
Correct Answer:
All of these.
Explanation:
Q306). Chlorite, a green colour mineral is mainly derived from the decomposition of
a).augite
b).biotite
c).horn blende
d).All of these.
Correct Answer:
augite
Explanation:
Q307). During smelting process, the combination of fuel in the furnace
a).forms carbon dioxide
b).carbon dioxide with carbon forms carbon mono-oxide
c).carbon mono-oxide reacts with FeO to form iron and liberates CO
d).all the above.
Correct Answer:
all the above.
Explanation:
Q308). Lime stones are generally known as
a).aqueous rocks
b).sedimentary rocks
c).stratified rocks
d).all the above.
Correct Answer:
all the above.
Explanation:
Q309). The method of addition polymerization is used for obtaining:
a).polythylene
b).polypropylene
c).polyvinylchloride
d).All of these.
Correct Answer:
All of these.
Explanation:
Q310). Pick up the correct statement from the following:
a).The lime in excess makes the cement unsound and causes the cement to expand and disintegrate
b).The silica in excess makes the cement stronger but its setting time also increases
c).The excess amount of alumina weakens the cement
d).All the above.
Correct Answer:
All the above.
Explanation:
Q311). A rock contains only one mineral. It is called
a).homogeneous
b).non-homogeneous
c).monomineralic
d).polymineralic.
Correct Answer:
monomineralic
Explanation:
Q312). Asbestos
a).is a natural fibrous mineral substance
b).is composed of hydrous silicates of calcium and magnesium (CaSiO, 3MgSiO)
c).contains iron oxide and alumina
d).all the above.
Correct Answer:
all the above.
Explanation: